1664970000 Weidmuller, 1664970000 Datasheet - Page 29

• Manufacturer Part Number: 1664970000
• Description: PLATE COVER SIZE 8 PLASTIC GRAY
• Manufacturer: Weidmuller
• Series: Rockstar® ABDr

Specifications of 1664970000

• Accessory Type: Cover Plate
• Rohs Compliant: NO
• For Use With/related Products: Rockstar® Bases
• For Use With: 1828560000 - CONN BASE HSNG BLKHD SIZE 8 M61828490000 - CONN BASE HSNG BLKHD SIZE 8 M6D1828480000 - CONN BASE HSNG BLKHD SIZE 8 M61827600000 - CONN BASE HSNG SIZE 8 M401827590000 - CONN BASE HSNG EMC SIZE 8 M401827500000 - CONN BASE HSNG BLKHD SIZE 8 M41827490000 - CONN BASE HSNG BLKHD SIZE 8 M41827480000 - CONN BASE HSNG BLKHD SIZE 8XXL1827250000 - CONN TOP HSNG HOOD SIZE 8 M401827240000 - CONN SIDE HSNG HOOD SIZE 8 M401827220000 - CONN SIDE HSNG HOOD SIZE 8 M401827210000 - CONN TOP HSNG HOOD SIZE 8 M401827200000 - CONN TOP HSNG HOOD SIZE 8XXL M501827190000 - CONN SIDE HSNG HOOD SIZE8XXL M501827170000 - CONN TOP HSNG HOOD SIZE 8XXL M501827160000 - CONN SIDE HSNG HOOD SIZE8XXL M501787890000 - CONN BASE HSNG M25 HB-24 SIZE81787870000 - CONN BASE HSNG M25 W/O COVER SZ81787850000 - CONN PLUG HSNG M32 W/O COVER SZ81787840000 - CONN PLUG HSNG M25 W/O COVER SZ81787830000 - CONN PLUG HSNG M32 W/O COVER SZ81787820000 - CONN PLUG HSNG M25 W/O COVER SZ81787810000 - CONN PLUG HSNG M32 W/O COVER SZ81787800000 - CONN PLUG HSNG M25 W/O COVER SZ81787790000 - CONN PLUG HSNG M32 W/O COVER SZ81787780000 - CONN PLUG HSNG M25 W/O COVER SZ81787770000 - CONN PLUG HSNG M32 W/O COVER SZ81787760000 - CONN PLUG HSNG M25 W/O COVER SZ81787750000 - CONN PLUG HSNG M32 W/O COVER SZ81786950000 - CONN HSNG BASE M25 W/COVER SIZE81786940000 - CONN HSNG BASE M32 W/COVER SIZE81786930000 - CONN HSNG BASE M25 W/COVER SIZE81786920000 - CONN HSNG BASE M32 LOWER SIZE 81786910000 - CONN HSNG BASE M25 LOWER SIZE 81786900000 - CONN HSNG BASE M32 LOWER SIZE 81786890000 - CONN HSNG BASE M25 LOWER SIZE 81786880000 - CONN HSNG BASE M32 LOWER SIZE 81786870000 - CONN PLUG HOUSING M25 TOP SIZE 81786850000 - CONN PLUG HOUSING M25 TOP SIZE 81786840000 - CONN PLUG HOUSING M25 TOP SIZE 81786830000 - CONN PLUG HOUSING M32 TOP SIZE 81786820000 - CONN HSNG HOOD M25 UPPER SIZE 81786810000 - CONN HSNG HOOD M32 UPPER SIZE 81786800000 - CONN HSNG HOOD M25 UPPER SIZE 81786790000 - CONN HSNG HOOD M32 UPPER SIZE 81786780000 - CONN HSNG HOOD M25 UPPER SIZE 81786770000 - CONN HSNG HOOD M32 UPPER SIZE 81663370000 - CONN PLUG HOOD SIDE SIZE 81663010000 - CONN BASE HVE W/COVER PG29 SIZE81661940000 - CONN PLUG HOOD HVE PG21 SIDE SZ81663360000 - HDC-HBD-64-TSVZ11663040000 - HDC-HBD-64-SDVL21662970000 - HDC-HBD-64-SDVL11662920000 - HDC-HB-24-SDVL11662780000 - HDC-HBD-64-SVL2281-2362 - CONN BASE HOUSING SIZE 81662710000 - HDC-HB-24-SVL11662690000 - HDC-HB-R-24-ADVL1662630000 - HDC-HBD-64-TOVL11662620000 - HDC-HBD-64-TOVL11662610000 - HDC-HBD-64-TOVL1281-2360 - CONN PLUG HOUSING SIZE 8281-2359 - CONN PLUG HOUSING SIZE 81662520000 - HDC-HBD-K-64-TSVL11662490000 - HDC-HBD-64-TSVL11662480000 - HDC-HBD-64-TSVL11662470000 - HDC-HBD-64-TSVL11662460000 - HDC-HBD-64-TSVL1281-2358 - CONN PLUG HOUSING SIZE 81662400000 - HDC-HB-24-TSVL1281-2357 - CONN PLUG HOUSING SIZE 81662280000 - HDC-HBD-64-SDVO11662270000 - HDC-HBD-64-SDVO11662250000 - HDC-HBD-64-SDVO21662200000 - HDC-HB-K-24-SDVO11662180000 - HDC-HB-24-SDVO21662170000 - HDC-HB-24-SDVO11662150000 - HDC-HB-K-24-ADVO1662100000 - HDC-HBD-64-TOVO11662090000 - HDC-HBD-64-TOVO11662080000 - HDC-HBD-64-TOVO11662020000 - HDC-HB-24-TOVO11661960000 - HDC-HBD-64-TSVO11661950000 - HDC-HBD-64-TSVO11661930000 - HDC-HBD-64-TSVO11661880000 - HDC-HB-24-TSVO11661870000 - HDC-HB-24-TSVO11661860000 - HDC-HB-24-TSVO1281-2355 - CONN BASE HOUSING SIZE 81661620000 - HDC-HBD-64-SVU21661610000 - HDC-HBD-64-SVU11661600000 - HDC-HBD-64-SVU11661590000 - HDC-HBD-64-SVU21661580000 - HDC-HBD-64-SVU21661570000 - HDC-HBD-64-SVU11661560000 - HDC-HBD-64-SVU1281-2354 - CONN BASE HOUSING SIZE 8281-2277 - CONN BASE HOUSING HE SIZE81661460000 - HDC-HBD-64-TOVU11661450000 - HDC-HBD-64-TOVU1281-2352 - CONN PLUG HOUSING SIZE 81661430000 - HDC-HBD-64-TOVU1281-2353 - CONN PLUG HOUSING SIZE 8281-2274 - CONN PLUG HOUSING HE SIZE81661320000 - HDC-HBD-64-TSVU11661310000 - HDC-HBD-64-TSVU11661300000 - HDC-HBD-64-TSVU11661290000 - HDC-HBD-64-TSVU1281-2351 - CONN PLUG HOUSING SIZE 8281-2273 - CONN PLUG HOUSING HE SIZE81611350000 - HDC-HB-24-AVZ1611330000 - HDC-HB-K-24-SDVL21603510000 - HDC-HBD-64-TSVZ11600620000 - HDC-HB-24-SVZ11579950000 - HDC-HB-K-24-AVU1579920000 - HDC-HB-K-24-ADVL1579890000 - HDC-HB-K-24-AVL1214500000 - HDC-HB-24-SDVL21214400000 - HDC-HB-24-SDVL11214300000 - HDC-HB-24-ADVL1214100000 - HDC-HB-24-SVL21214000000 - HDC-HB-24-SVL1281-2361 - CONN BLKHD HOUSING SIZE 81213800000 - HDC-HB-24-TSVL11213700000 - HDC-HB-24-TOVL11213600000 - HDC-HB-24-TOVL11213500000 - HDC-HB-24-SDVO21213400000 - HDC-HB-24-SDVO11213300000 - HDC-HB-24-ADVO1213100000 - HDC-HB-24-TSVO11213000000 - HDC-HB-24-TOVO11212900000 - HDC-HB-24-TOVO11212600000 - HDC-HB-24-SVU21212500000 - HDC-HB-24-SVU1281-2276 - CONN BLKHD HOUSNG HE SIZE81212200000 - HDC-HB-24-TSVU11212100000 - HDC-HB-24-TSVU11212000000 - HDC-HB-24-TOVU11211900000 - HDC-HB-24-TOVU1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Ratings: -
• Other names: ABD/8/GR

The derating curve shows which currents may flow continu-
ously and simultaneously via all possible connections when the
component is subjected to various ambient temperatures below
its upper limit temperature.
The upper limit temperature of a component is the rated
value determined by the materials used. The total of the ambient
temperature plus the temperature rise caused by the current
load (power loss at contact resistance) may not exceed the
upper limit temperature of the component, otherwise it will be
damaged or even completely ruined. The current-carrying
capacity is hence not a constant value, but rather de-creases
as the component ambient temperature increases. Furthermore,
the current-carrying capacity is influenced by the geometry of
the component, the number of poles and the conductor(s)
connected to it.
The current-carrying capacity is determined empirically accord-
ing to DIN IEC 60512-3. To do this, the resulting component
temperatures t
are measured for three different currents I
The values are entered on a graph with a system of linear
coordinates to illustrate the relationships between the currents,
the ambient temperatures and the temperature rise in the
component.
Base curve
t
t
I
g
u
n
= upper limit temperature of component
= ambient temperature
= current
b1
, t
b2
… and the ambient temperatures t
upper limit temperature
of component
1
, I
2
, I
3
….
u1
, t
u2
Derating curve
t
t
I
a = Base curve
b = Reduced base curve (derating curve)
The loading currents are plotted on the y-axis, the compo-
nent ambient temperatures on the x-axis. A line drawn
perpendicular to the x-axis at the upper limit temperature t
of the component completes the system of coordinates. The
associated average values of the temperature rise in the
component, Δt
current I
generated in this way are joined to form a roughly parabolic
curve.
As it is practically impossible to choose components with the
maximum permissible contact resistances for the measure-
ments, the base curve must be reduced. Reducing the currents
to 80% results in the “derating curve” in which the maximum
permissible contact resistances and the measuring uncertainties
in the temperature measurements are taken into account in
such a way that they are suitable for practical applications,
as experience has shown. If the derating curve exceeds the
currents in the low ambient temperature zone, which is given
by the current-carrying capacity of the conductor cross-
sections to be connected, then the derating curve should be
limited to the smaller current in this zone.
n
g
u
= upper limit temperature of component
= ambient temperature
= current
1
, I
2
, … to the left of the perpendicular line. The points
1
= t
b1
-t
u1
, Δt
2
= t
b2
-t
u2
,... are plotted for every
Technical data
g
A.19
A